280757880

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19997}}^1$

素因数の和:20030

約数の個数: 128

約数和(自身を含む): 1007899200

約数和(自身を除く): 727141320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1560, 1755, 2340, 2808, 3510, 4680, 7020, 14040, 19997, 39994, 59991, 79988, 99985, 119982, 159976, 179973, 199970, 239964, 259961, 299955, 359946, 399940, 479928, 519922, 539919, 599910, 719892, 779883, 799880, 899865, 1039844, 1079838, 1199820, 1299805, 1439784, 1559766, 1799730, 2079688, 2159676, 2339649, 2399640, 2599610, 2699595, 3119532, 3599460, 3899415, 4319352, 4679298, 5199220, 5399190, 6239064, 7018947, 7198920, 7798830, 9358596, 10398440, 10798380, 11698245, 14037894, 15597660, 18717192, 21596760, 23396490, 28075788, 31195320, 35094735, 46792980, 56151576, 70189470, 93585960, 140378940, 280757880]

約数ペア:

[(1, 280757880), (2, 140378940), (3, 93585960), (4, 70189470), (5, 56151576), (6, 46792980), (8, 35094735), (9, 31195320), (10, 28075788), (12, 23396490), (13, 21596760), (15, 18717192), (18, 15597660), (20, 14037894), (24, 11698245), (26, 10798380), (27, 10398440), (30, 9358596), (36, 7798830), (39, 7198920), (40, 7018947), (45, 6239064), (52, 5399190), (54, 5199220), (60, 4679298), (65, 4319352), (72, 3899415), (78, 3599460), (90, 3119532), (104, 2699595), (108, 2599610), (117, 2399640), (120, 2339649), (130, 2159676), (135, 2079688), (156, 1799730), (180, 1559766), (195, 1439784), (216, 1299805), (234, 1199820), (260, 1079838), (270, 1039844), (312, 899865), (351, 799880), (360, 779883), (390, 719892), (468, 599910), (520, 539919), (540, 519922), (585, 479928), (702, 399940), (780, 359946), (936, 299955), (1080, 259961), (1170, 239964), (1404, 199970), (1560, 179973), (1755, 159976), (2340, 119982), (2808, 99985), (3510, 79988), (4680, 59991), (7020, 39994), (14040, 19997)]